Note: This is an archival copy of Security Sun Alert 264730 as previously published on http://sunsolve.sun.com.
Latest version of this security advisory is available from http://support.oracle.com
as Sun Alert 1020780.1.

A security vulnerability in Solaris Sockets Direct Protocol (SDP) driver (sdp(7D)) may allow a local or remote unprivileged user to exhaust all kernel memory. This is a type of Denial of Service (DoS).

Note: No applications bundled with Solaris are affected by this issue however third-party applications which make use of SDP may be affected.2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

Solaris 10 with patch 127127-11 and without patch 141444-09

OpenSolaris based upon builds snv_57 through snv_94

x86 Platform

Solaris 10 with patch 127128-11 and without patch 141445-09

OpenSolaris based upon builds snv_57 through snv_94

Note
1: Solaris 8 and Solaris 9 are not impacted by this issue.

Note 2: OpenSolaris
distributions may include additional bug fixes above and beyond the
build from which it was derived. To determine the base build of
OpenSolaris, the following command can
be used:

$ uname -v snv_111

Note 3: This issue only affects applications written to use the Sockets Direct Protocol (SDP) driver. No applications shipped with Solaris are affected by this issue. To determine if Solaris Sockets Direct Protocol (SDP) is enabled, execute the following command:

$ sdpadm status SDP is Enabled

3. Symptoms

There are no predictable symptoms that would indicate the described
vulnerability has been exploited.

4. Workaround

There is no workaround for this issue. Please see the Resolution
section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

Solaris 10 with patch 141444-09 or later

OpenSolaris based upon builds snv_95 or later

x86 Platform

Solaris 10 with patch 141445-09 or later

OpenSolaris based upon builds snv_95 or later

For more information
on Security Sun Alerts, see 1009886.1.

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